Sharraxaadda

At rush hour in the evening, there are so many pedestrians crossing 14th St NW that cars trying to turn left off of I St. onto 14th must wait until the last 2 or 3 seconds of the green light, and often don't get to turn at all. Drivers get frustrated from the wait, and bolt into the intersection trying to cheat the red light any way. The pedestrians are not doing anything wrong, it's just that the volume of people takes so long to cross. Can the district provide crosswalk traffic guards or some other way to get things moving safely?